Material guiding mechanism, spray head suite applying same and 3D printing equipment

Abstract

The embodiment of the utility model provides a material guide mechanism, a spray head kit applying the material guide mechanism and 3D printing equipment. The material guiding mechanism comprises a material guiding main body and a plurality of guiding pieces which are connected, the material guiding main body comprises a feeding end and a discharging end which are arranged at intervals in the arrangement direction, and the material guiding main body is used for guiding consumables from the feeding end to the discharging end; the multiple guiding pieces are connected with the material guiding main body, are arranged at the feeding end at intervals and are used for guiding multiple consumables into the material guiding main body; wherein the guide parts are obliquely arranged in different directions relative to the arrangement direction and are not parallel to one another. The spray head suite comprises a spray head functional body and a material guiding mechanism, and the material guiding mechanism is connected with the spray head functional body and used for guiding consumables to enter the spray head functional body. The 3D printing equipment comprises a 3D printing main body and the material guide mechanism or the spray head suite.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of 3D printing, in particular to a material guiding mechanism, a nozzle assembly using the same and a 3D printing device. BACKGROUND

[0002] 3D printing technology is a rapid prototyping technology that uses special wax material, powdered metal or plastic and other adhesive materials to manufacture three-dimensional objects by printing layer by layer based on digital model files. Fused deposition modeling technology is one of the main 3D printing technologies. The technology is to heat and melt the hot melt material filament, then extrude it from the nozzle to deposit on the forming platform or the previously solidified material, and finally generate a real object. During the printing process, the consumables (usually material filaments) need to be introduced from the feeding end of the nozzle assembly and further melted and extruded at the nozzle. For the 3D printing scene of multi-color printing, a feasible technical route is to make a nozzle device selectively heat one of multiple consumables. How to realize that one nozzle corresponds to multiple consumables is a problem that needs to be considered by those skilled in the art. SUMMARY

[0003] In order to solve the problems in the prior art, the embodiments of the present application provide a material guiding mechanism, a nozzle assembly using the same and a 3D printing device.

[0004] The embodiments of the present application provide a material guiding mechanism, which comprises:

[0005] a material guiding body, comprising a feeding end and a discharging end arranged at intervals along a arranging direction, the material guiding body being used to guide the consumables from the feeding end to the discharging end;

[0006] a plurality of guides, respectively connected with the material guiding body, the plurality of guides being arranged at intervals at the feeding end and being used to guide a plurality of consumables to enter the material guiding body respectively;

[0007] wherein the plurality of guides are arranged at different directions relative to the arranging direction and are not parallel to each other.

[0008] In an embodiment, the material guiding body is provided with a material guiding channel connecting the feeding end and the discharging end along a material guiding direction, the material guiding channel being used to transmit consumables, and the material guiding channel comprises:

[0009] a joint channel, the joint channel being used to connect the discharging end;

[0010] a plurality of branch channels, the plurality of branch channels being respectively used to connect the feeding end;

[0011] wherein the plurality of branch channels are respectively connected with the joint channel, and a section of each branch channel connected with the guide is configured to approach each other along the material guiding direction.

[0012] In an embodiment, the sub-channel comprises a first narrowed section for accommodating a guide member;

[0013] The first narrowed section comprises a first sub-section and a second sub-section distributed along the material guiding direction, the inner diameter of the first sub-section is greater than that of the second sub-section.

[0014] In an embodiment, the sub-channel further comprises a second narrowed section in communication with the first narrowed section;

[0015] The second narrowed section comprises a third sub-section in communication with the second sub-section, the inner diameter of the second sub-section is greater than that of the third sub-section.

[0016] In an embodiment, the second narrowed section further comprises a fourth sub-section, the third sub-section and the fourth sub-section are arranged in communication along the material guiding direction, the fourth sub-section gradually decreases in size along the material guiding direction.

[0017] In an embodiment, the combined channel comprises:

[0018] a leading-in section in communication with the plurality of sub-channels;

[0019] a leading-out section in communication with the leading-in section at one end and with the material outlet end at the other end;

[0020] wherein the inner diameter of the leading-in section is greater than or equal to that of the leading-out section.

[0021] In an embodiment, the leading-in section gradually decreases in size along the material guiding direction, the end of the leading-in section away from the leading-out section is in communication with the plurality of sub-channels.

[0022] In an embodiment, the guide member comprises:

[0023] a connecting portion connected with the material guiding body, the connecting portion is arranged in the sub-channel;

[0024] a leading-through portion connected with the connecting portion and provided with a leading-through hole penetrating along the material guiding direction, the leading-through hole is connected with the sub-channel.

[0025] In an embodiment, the material guiding mechanism further comprises a material selecting assembly, the material selecting assembly comprises:

[0026] a guide member provided with a guide cavity corresponding to the material outlet end for receiving the consumable;

[0027] a driving member connected with the guide member for driving the guide member to move along a material selecting direction;

[0028] The material selection member is arranged on the side of the guide member away from the arrangement direction, and includes a plurality of material selection channels arranged at intervals along the material selection direction, and the guide cavity corresponds to one of the plurality of material selection channels.

[0029] In an embodiment, the inner diameter of the guide cavity on the side close to the discharge end along the arrangement direction is greater than the inner diameter of the guide cavity on the side close to the material selection member along the arrangement direction.

[0030] The application also provides a nozzle assembly, which includes a nozzle functional body and the material guide mechanism according to any one of the preceding embodiments, and the material guide mechanism is connected to the nozzle functional body to guide the consumables into the nozzle functional body.

[0031] The application also provides a 3D printing device, which includes a 3D printing body and the material guide mechanism according to any one of the preceding embodiments or the nozzle assembly according to the preceding embodiments.

[0032] It can be understood that, in the material guide mechanism, the material guide body is used to guide the consumables from the feeding end to the discharging end, thereby realizing the guidance of the consumables. The plurality of guide members are arranged at intervals at the feeding end to guide the plurality of consumables into the material guide body respectively, so that the material guide mechanism can guide the plurality of consumables to adapt to the application environment of multi-consumable printing. The plurality of guide members are arranged at different angles relative to the arrangement direction and are not parallel to each other, so that the plurality of consumables guided by the plurality of guide members can be configured to enter the material guide mechanism in different directions. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A perspective view of the material guide mechanism from one angle is provided in the embodiments of the application.

[0034] Figure 2 A perspective view of the material guide mechanism from another angle is provided in the embodiments of the application.

[0035] Figure 3 A perspective view of the material guide mechanism is provided in the embodiments of the application. Figure 1 A sectional view along the III-III direction.

[0036] Figure 4 A perspective view of the material guide body of the material guide mechanism is provided in the embodiments of the application.

[0037] Figure 5 A perspective view of the guide member of the material guide mechanism is provided in the embodiments of the application.

[0038] Figure 6 A structural schematic view of the material guide mechanism is provided in another embodiment of the application.

[0039] Figure 7 A perspective view of a nozzle kit according to an embodiment of the present application.

[0040] Figure 8 A cross-sectional view of a nozzle kit according to an embodiment of the present application.

[0041] Figure 9 A schematic view of a 3D printing device according to an embodiment of the present application.

[0042] Explanation of main element symbols

[0043] Material guiding mechanism 10

[0044] Inlet end 101

[0045] Outlet end 102

[0046] Material guiding body 11

[0047] Material guiding passage 12

[0048] Sub-passage 13

[0049] First narrowing section 131

[0050] First sub-section 1311

[0051] Second sub-section 1312

[0052] Second narrowing section 132

[0053] Third sub-section 1323

[0054] Fourth sub-section 1324

[0055] Fifth sub-section 135

[0056] Combined passage 14

[0057] Leading-in section 141

[0058] Leading-out section 142

[0059] Strengthening ring 15

[0060] Guide 16

[0061] Connection portion 161

[0062] Sealing ring 1611

[0063] Conducting portion 162

[0064] Conducting hole 1621

[0065] Material selecting assembly 19

[0066] Guide 191

[0067] guide cavity 1910

[0068] drive member 192

[0069] material selection member 193

[0070] first material selection passage 1931

[0071] second material selection passage 1932

[0072] nozzle assembly 1

[0073] transport passage 17

[0074] nozzle functional body 18

[0075] extrusion mechanism 181

[0076] nozzle mechanism 182

[0077] 3D printing device 2

[0078] 3D printing body 20

[0079] molding platform 21

[0080] X-axis drive assembly 22

[0081] gantry 23

[0082] material guiding direction L

[0083] arrangement direction H

[0084] material selection direction T

[0085] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0086] The following description will refer to the accompanying drawings, which are meant to exemplify embodiments of the application. The application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. Like reference numerals refer to like components throughout the specification. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "including", "includes", "having", "has", "a", "an", "one" or "said" are used in this specification and / or claims, they are intended to be inclusive (meaning that there can be additional items) and / or they are intended to be quantitatively-satisfied by at least the recited members, unless explicitly indicated to the contrary. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an overly literal or overly formal sense unless expressly so defined herein.

[0087] Generally, 3D printing technology is a rapid prototyping technology that uses special wax material, powdered metal or plastic and other adhesive materials to manufacture three-dimensional objects by printing layer by layer based on digital model files. Fused deposition modeling technology is one of the main 3D printing technologies. This technology is to heat and melt the hot melt material filament, then extrude it from the nozzle, and deposit it on the forming platform or the previously solidified material, finally generate the real object. During the printing process, the consumables (usually material filaments) need to be introduced from the feeding end of the nozzle kit and further melted and extruded at the nozzle. For the 3D printing scene of multi-color printing, a feasible technical route is to make one nozzle device selectively heat one of multiple consumables. How to realize one nozzle corresponding to multiple consumables is a problem that those skilled in the art need to consider.

[0088] Correspondingly, embodiments of this application provide a material guiding mechanism and a nozzle kit and a 3D printing device using the same. The material guiding mechanism includes a connected material guiding body and guide members. The material guiding body includes an inlet end and an outlet end spaced apart along the arrangement direction. The material guiding body guides consumables from the inlet end to the outlet end. Multiple guide members are respectively connected to the material guiding body and are spaced apart at the inlet end, guiding multiple consumables into the material guiding body. The multiple guide members are inclined in different directions relative to the arrangement direction and are not parallel to each other. The nozzle kit includes a nozzle functional body and a material guiding mechanism. The material guiding mechanism is connected to the nozzle functional body and guides consumables into the nozzle functional body. The 3D printing device includes a 3D printing body and the material guiding mechanism or, as described in the nozzle kit, the material guiding mechanism.

[0089] Furthermore, in the material guiding mechanism of this application, the material guiding body is used to guide the consumables from the feeding end to the discharging end, thereby achieving the guiding of the consumables. Multiple guide members are spaced apart at the feeding end to guide multiple consumables to enter the material guiding body, enabling the material guiding mechanism to guide multiple consumables to adapt to multi-consumable printing application environments. The multiple guide members are arranged at different inclinations and are not parallel to each other, allowing the multiple consumables guided by the multiple guide members to be configured to enter the material guiding mechanism in different directions.

[0090] As will be understood by those skilled in the art, “3D printing” refers to a technology that constructs objects by printing layer by layer using powdered metal or plastic and other bondable materials based on digital model files.

[0091] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments. It should be noted that components depicted in the drawings are not necessarily shown to scale; and identical or similar components will be designated with the same or similar reference numerals or similar technical terms.

[0092] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0093] like Figures 1 to 5 As shown, this application embodiment provides a material guiding mechanism 10, which includes a material guiding body 11 and a guide member 16 connected together. The material guiding body 11 includes an inlet end 101 and an outlet end 102 spaced apart along the arrangement direction H. The material guiding body 11 is provided with a material guiding channel 12 connecting the inlet end 101 and the outlet end 102 along the material guiding direction L. The material guiding channel 12 is used to transport consumables. The guide member 16 is detachably connected to the material guiding body 11. The guide member 16 is provided at the inlet end 101 and is used to guide the consumables into the material guiding body 11. The material guiding body 11 can further guide the consumables out of the material guiding mechanism 10 from the outlet end 102, completing the guidance of the consumables at the material guiding mechanism 10.

[0094] In an embodiment, the material guiding body 11 is configured to guide the consumables from the feeding end 101 to the discharging end 102; the plurality of guides 16 are respectively connected with the material guiding body 11, and the plurality of guides 16 are arranged at the feeding end 101 in a spaced manner and are configured to guide the plurality of consumables to enter the material guiding body 11 respectively; wherein the plurality of guides 16 are arranged in different directions relative to the arrangement direction H and are not parallel to each other.

[0095] It can be understood that the material guiding body 11 is configured to guide the consumables from the feeding end 101 to the discharging end 102, thereby realizing the guidance of the consumables. The plurality of guides 16 are arranged at the feeding end 101 in a spaced manner and are configured to guide the plurality of consumables to enter the material guiding body 11 respectively, so that the material guiding mechanism 10 can realize the guidance of the plurality of consumables to adapt to the application environment of the multi-consumable printing. The plurality of guides 16 are arranged in different directions relative to the arrangement direction H and are not parallel to each other, so that the plurality of consumables guided by the plurality of guides 16 can be configured to enter the material guiding mechanism 10 in different directions.

[0096] In the embodiment, one end of the guide 16 along the arrangement direction H extends into the material guiding body 11, and the other end of the guide 16 along the arrangement direction H is located outside the material guiding body 11. The plurality of guides 16 located outside the material guiding body 11 are away from each other, and are configured to guide different consumables respectively; the plurality of guides 16 extending into the material guiding body 11 are close to each other, and are configured to make the plurality of different consumables close to each other. That is, the plurality of guides 16 are arranged close to each other along the material guiding direction L.

[0097] In an embodiment, the material guiding passage 12 includes a combined passage 14 and a plurality of divided passages 13, the combined passage 14 is configured to communicate with the discharging end 102, and the plurality of divided passages 13 are respectively configured to communicate with the feeding end 101. The plurality of divided passages 13 respectively communicate with the combined passage 14, and each divided passage 13 is configured to communicate with a segment of the guide 16 and is arranged close to each other along the material guiding direction L.

[0098] It can be understood that in the material guiding mechanism 10 of the present application, the material guiding body 11 is provided with a material guiding channel 12 which is connected with the feeding end 101 and the discharging end 102 along the material guiding direction L, so that the consumables can pass through the material guiding mechanism 10 through the material guiding channel 12. A plurality of sub-channels 13 are respectively connected with the feeding end 101, and the plurality of sub-channels 13 can be used to respectively accommodate a plurality of consumables. The part of each sub-channel 13 which is connected with the guide 16 is configured to approach each other along the material guiding direction L, so as to guide the consumables and make the feeding of the consumables more smooth and less prone to blockage. The plurality of sub-channels 13 are respectively connected with the joint channel 14, and the joint channel 14 is used to connect the discharging end 102. Different consumables entering from the plurality of sub-channels 13 can further enter the joint channel 14 and be extruded from the discharging end 102 through the joint channel 14. The plurality of sub-channels 13 are connected with one joint channel 14, and the plurality of consumables respectively located in the plurality of sub-channels 13 can be selectively guided into the nozzle kit 1 through one joint channel 14, that is, the nozzle kit 1 can be matched with the plurality of consumables, and the mutual extrusion and blockage of the plurality of consumables can be avoided.

[0099] In the present embodiment, the arrangement direction H intersects with the extension direction of the sub-channels 13, and the arrangement direction H is parallel to the extension direction of at least one segment of the joint channel 14.

[0100] In the present embodiment, the material guiding channel 12 includes one joint channel 14 and four sub-channels 13. The side of the four sub-channels 13 which is close to the feeding end 101 is spaced apart from each other, and each sub-channel 13 can be connected with one guide 16. The four sub-channels 13 are arranged to be inclined to each other, and the side of the four sub-channels 13 which is close to the joint channel 14 along the material guiding direction L approaches each other and is respectively connected with the joint channel 14.

[0101] It can be understood that the material guiding direction L is the direction in which the consumables are transmitted and advanced, which can be a straight line direction, a curved direction, or a direction composed of a straight line and a curve; generally, in order to improve the efficiency of feeding of the consumables and avoid blockage, the material guiding direction L is configured to extend in a substantially smooth manner. In the present embodiment, each sub-channel 13 has a respective extension direction, and the extension directions of the consumables in different sub-channels 13 are not the same, but the extension directions of the consumables after entering the joint channel 14 are substantially the same; and the extension directions of the joint channel 14 and each sub-channel 13 are substantially configured from the feeding end 101 to the discharging end 102.

[0102] In an embodiment, the material guiding body 11 can be substantially in the shape of a truncated cone, the width of the material guiding body 11 corresponding to the side of the material guiding mechanism 10 at the feeding end 101 along the arrangement direction H is larger, and the width of the material guiding body 11 corresponding to the side of the material guiding mechanism 10 at the discharging end 102 along the arrangement direction H is smaller. The feeding ports of the plurality of sub-channels 13 are arranged corresponding to the side of the material guiding body 11 corresponding to the feeding end 101 of the material guiding mechanism 10, and the discharging ports of the combined channels 14 are arranged corresponding to the side of the material guiding body 11 corresponding to the discharging end 102 of the material guiding mechanism 10, and the connection between the sub-channels 13 and the combined channels 14 is arranged substantially in the middle region of the material guiding body 11.

[0103] In an embodiment, the material guiding channel 12 is arranged inside the material guiding body 11, and the specific implementation manner can be various. For example, the material guiding body 11 can include an outer shell and a pipe with an outer wall, the outer shell is a cavity, and the pipe is arranged in the cavity. Alternatively, the material guiding body 11 is a solid structure, and the material guiding channel 12 is arranged inside the solid material guiding body 11. Alternatively, the material guiding channel 12 can also be a combination of the above two implementation manners.

[0104] In an embodiment, the sub-channel 13 includes a first narrow section 131 for accommodating the guide 16. The first narrow section 131 includes a first section 1311 and a second section 1312 distributed along the material guiding direction L, and the inner diameter of the first section 1311 is larger than that of the second section 1312.

[0105] In the embodiment, the first narrow section 131 is the section of the sub-channel 13 closest to the feeding end 101 along the material guiding direction L, and the first narrow section 131 is directly exposed, so that the guide 16 can be arranged in the first narrow section 131. The first section 1311 and the second section 1312 are arranged in a stepped manner, which facilitates the connection of the guide 16 and the material guiding body 11.

[0106] It can be understood that the first section 1311 is a wider section in the first narrow section 131, which can be used to accommodate the guide 16 arranged therein and can be connected with the connecting part 161 of the guide 16, so that the guide 16 can be connected with the material guiding body 11. The second section 1312 is a narrower section in the first narrow section 131, which can be used for the guide-through part 162 of the guide 16 to extend therein to guide the consumables.

[0107] In an embodiment, the sub-channel 13 further includes a second narrow section 132, and the second narrow section 132 is in communication with the first narrow section 131.

[0108] In the embodiment, the second narrow section 132 is in communication with the first narrow section 131, so that the second narrow section 132 can be further in communication with the guide-through part 162 of the guide 16, and the consumables guided by the guide 16 are further received by the second narrow section 132 after leaving the guide 16.

[0109] In an embodiment, the second narrowing section 132 comprises a third section 1323. The third section 1323 is in communication with the second section 1312, and the inner diameter of the second section 1312 is greater than the inner diameter of the third section 1323.

[0110] In the present embodiment, the third section 1323 is a section of the second narrowing section 132 closer to the first narrowing section 131 along the material guiding direction L, and is configured to be in further communication with the through portion 162 of the guide 16 to receive the consumable.

[0111] It can be understood that the second section 1312 for accommodating the through portion 162 can have a greater inner diameter, and the third section 1323 configured to accommodate the consumable can have a smaller inner diameter, which is closer to the outer diameter of the consumable, to avoid misalignment of the consumable.

[0112] In an embodiment, the second narrowing section 132 further comprises a fourth section 1324. The third section 1323 and the fourth section 1324 are arranged in communication along the material guiding direction L, and the fourth section 1324 gradually decreases in size along the material guiding direction L.

[0113] It can be understood that the fourth section 1324 is a section of the second narrowing section 132 away from the first narrowing section 131 along the material guiding direction L, and the fourth section 1324 can have a smaller inner diameter than the third section 1323, which is closer to the outer diameter of the consumable to avoid misalignment of the consumable. The fourth section 1324 gradually decreases in size along the material guiding direction L, and the inner wall of the inclined fourth section 1324 can guide the consumable.

[0114] In an embodiment, the through channel 13 further comprises a fifth section 135. One end of the fifth section 135 along the material guiding direction L is in communication with the fourth section 1324, and the other end of the fifth section 135 along the material guiding direction L is in communication with the combined channel 14.

[0115] In an embodiment, the combined channel 14 comprises an import section 141 and an export section 142. The import section 141 is configured to be in communication with the plurality of through channels 13, and one end of the export section 142 is in communication with the import section 141, and the other end of the export section 142 is in communication with the material outlet 102. The inner diameter of the import section 141 is greater than or equal to the inner diameter of the export section 142.

[0116] In an embodiment, the import section 141 gradually decreases in size along the material guiding direction L, and the end of the import section 141 away from the export section 142 is in communication with the plurality of through channels 13.

[0117] In the embodiment, the cross section of the introduction section 141 is substantially in the shape of a truncated cone, the side with wider inner diameter of the introduction section 141 is in communication with the plurality of sub-channels 13, the side with narrower inner diameter of the introduction section 141 is in communication with the lead-out section 142, and the inner diameter of the introduction section 141 gradually decreases along the material guiding direction L.

[0118] It can be understood that, at the communication between the communication channel 14 and the sub-channel 13, the inner diameter of the introduction section 141 is configured to be relatively large, which can provide a certain avoidance and movement space for the transmission of the consumable, so as to avoid the situation that the consumable cannot be advanced or retracted after being blocked, and make the material guiding process smoother. Meanwhile, the introduction section 141 is configured to gradually decrease along the material guiding direction L, and the inclined inner wall of the introduction section 141 can guide the consumable, so that the consumable can be better transmitted along the material guiding direction L.

[0119] In an embodiment, the guide 16 includes a connecting portion 161 and a lead-through portion 162. The connecting portion 161 is connected with the material guiding body 11, and the connecting portion 161 is arranged in the sub-channel 13. The lead-through portion 162 is connected with the connecting portion 161, and is provided with a lead-through hole 1621 penetrating along the material guiding direction L, and the lead-through hole 1621 is connected with the sub-channel 13.

[0120] In the embodiment, the connecting portion 161 is used to be connected with the material guiding body 11, and the connecting portion 161 is substantially in the shape of a cylinder and is used to be connected with the first narrowing section 131. The connecting portion 161 can be made of a material with a certain hardness and capable of being deformed, such as hard rubber; and the periphery of the connecting portion 161 can be provided with a plurality of replaceable sealing rings 1611, which are used to enhance the connection effect of the connecting portion 161 with the material guiding body 11.

[0121] In the embodiment, the lead-through portion 162 is used to accommodate the guided consumable. The lead-through portion 162 is provided with a lead-through hole 1621 penetrating along the material guiding direction L, and the consumable passes through the lead-through hole 1621 to enter the sub-channel 13. The lead-through portion 162 can be arranged penetrating through the connecting portion 161 along the material guiding direction L, and the lead-through portion 162 and the connecting portion 161 can be connected or integrally formed.

[0122] In an embodiment, the material guiding body 11 further includes a reinforcing ring 15, and the reinforcing ring 15 is arranged around the outlet end 102.

[0123] In the embodiment, the reinforcing ring 15 can be made of a material with a certain hardness and capable of being deformed, such as hard rubber, and the reinforcing ring 15 is used to enhance the connection effect of the material guiding body 11 with other structures on the nozzle kit 1 after the material guiding mechanism 10 is inserted into the nozzle kit 1.

[0124] It can be understood that the material guiding mechanism 10 provided by the embodiments of the present application can accommodate multiple consumables at the same time, and the multiple consumables are arranged in one sub-channel 13 respectively. One consumable extends from the sub-channel 13 to the joint channel 14 and can further extend to the transmission channel 17 of the nozzle kit 1, and the other consumables can remain in other sub-channels 13 or be withdrawn from the material guiding mechanism 10 through other sub-channels 13.

[0125] Further combined Figure 6 As shown in the figure, the structure schematic diagram of the material guiding mechanism 10 provided by another embodiment of the present application. The material guiding mechanism 10 provided in the embodiment is different from the material guiding mechanism 10 provided in the above embodiment in that the material guiding mechanism 10 further comprises a material selecting assembly 19. Figures 1 to 5

[0126] In an embodiment, the material selecting assembly 19 comprises a guide member 191, a driving member 192 and a material selecting member 193. The guide member 191 is provided with a guide cavity 1910 corresponding to the material outlet end 102 for accommodating the consumable. The driving member 192 is connected with the guide member 191 for driving the guide member 191 to move along the material selecting direction T. The material selecting member 193 is arranged on the side of the guide member 191 away from the guide member 191 along the arrangement direction H, and the material selecting member 193 comprises a plurality of material selecting channels (for example, a first material selecting channel 1931 and a second material selecting channel 1932) arranged at intervals along the material selecting direction T, and the guide cavity 1910 corresponds to one of the plurality of material selecting channels.

[0127] In an embodiment, the inner diameter of the guide cavity 1910 on the side close to the material outlet end 102 along the arrangement direction H is greater than the inner diameter of the guide cavity 1910 on the side close to the material selecting member 193 along the arrangement direction H.

[0128] It can be understood that after the consumable moves from the joint channel 14 to the material outlet end 102, the extended consumable further extends into the guide cavity 1910 and is guided by the guide member 191. The driving member 192 drives the guide member 191 to move along the material selecting direction T, so that the outlet end of the guide cavity 1910 corresponds to one of the plurality of material selecting channels, so that the consumable is guided by the guide member 191 into a designated one of the material selecting channels (for example, the first material selecting channel 1931 or the second material selecting channel 1932), thereby realizing the material selection of the material guiding mechanism 10.

[0129] ​In an embodiment, the inlet end of the guide cavity 1910 with an inverted trapezoidal cross-section has a larger width, which can correspond to the outlet end 102 at all times during the movement of the guide 191 along the material selection direction T, thereby preventing the leakage of the consumable. Meanwhile, the outlet end of the guide cavity 1910 with an inverted trapezoidal cross-section has a smaller width, which can selectively correspond to one of the plurality of material selection channels (e.g., the first material selection channel 1931 or the second material selection channel 1932) during the movement of the guide 191 along the material selection direction T, i.e., to ensure that the consumable can enter the guide 191 and to achieve material selection.

[0130] In the present embodiment, the number of the material selection channels is taken as an example of 2, which include the first material selection channel 1931 and the second material selection channel 1932. The first material selection channel 1931 and the second material selection channel 1932 are arranged at intervals along the material selection direction T, and the first material selection channel 1931 and the second material selection channel 1932 can correspond to different connection structures (e.g., the extrusion mechanism 181 of the nozzle functional body 18 or other structures), respectively. That is, in the present embodiment, four consumables can correspond to two material selection channels, i.e., a “4-in-2-out” structure. In other embodiments, the number of the material selection channels can also be multiple, which will not be described herein.

[0131] It can be understood that the driving member 192 is connected with the guide 191 for driving the guide 191. The driving member 192 can be a linear driving mechanism cooperated by a motor and a lead screw, or a linear motor, a stepper motor or other linear driving mechanisms, which can directly drive the guide 191 to move along the material selection direction T. Alternatively, the driving member 192 can also be a mechanical transmission mode such as belt transmission, gear transmission, cam transmission or the like to drive the guide 191, which can be understood by those skilled in the art and will not be described herein.

[0132] Further combining Figure 7 and Figure 8 It is shown that the present application also provides a nozzle assembly 1, which includes a nozzle functional body 18 and a material guiding mechanism 10 according to any one of the preceding embodiments, and the material guiding mechanism 10 is connected with the nozzle functional body 18 for guiding the consumable to enter the nozzle functional body 18.

[0133] In the present embodiment, the nozzle functional body 18 includes an extrusion mechanism 181 and a nozzle mechanism 182, and a transmission channel 17 penetrates through the extrusion mechanism 181 and the nozzle mechanism 182 along a transmission direction. The transmission channel 17 is in communication with the material guiding channel 12 for transmitting the consumable. The consumable introduced from the material guiding direction L enters the extrusion mechanism 181, and the extrusion mechanism 181 drives the consumable to further transmit along the transmission channel 17 to the nozzle mechanism 182. The nozzle mechanism 182 can heat the consumable to soften it, and the softened consumable can be extruded from the nozzle mechanism 182 to complete 3D printing.

[0134] In the embodiment, the extruding mechanism 181 is located between the material guiding mechanism 10 and the nozzle mechanism 182 along the arrangement direction H, the feeding end 101 of the material guiding mechanism 10 is located on the side of the extruding mechanism 181 away from the nozzle mechanism 182 along the arrangement direction H, the plurality of guides 16 are all located on the side of the extruding mechanism 181 away from the nozzle mechanism 182 along the arrangement direction H, and the discharging end 102 of the material guiding mechanism 10 is in abutment with the extruding mechanism 181.

[0135] Further combining Figure 9 As shown in the drawings, the embodiment of the present application also provides a 3D printing device 2, which comprises a 3D printing main body 20 and the material guiding mechanism 10 or the nozzle assembly 1 according to any one of the foregoing embodiments.

[0136] In an embodiment, the 3D printing main body 20 comprises a forming platform 21, an X-axis driving assembly 22 and a gantry 23, the forming platform 21 and the X-axis driving assembly 22 are respectively connected with the gantry 23, the nozzle assembly 1 is movably connected with the X-axis driving assembly 22, and the nozzle assembly 1 can relatively move with the forming platform 21 to perform 3D printing.

[0137] In the foregoing, the specific embodiments of the present application are described with reference to the drawings. However, those skilled in the art can understand that various changes and replacements can be made to the specific embodiments of the present application without departing from the spirit and scope of the present application. These changes and replacements all fall within the scope defined by the present application.

Claims

1. A material guiding mechanism, characterized in that, include: The material guiding body includes an inlet end and an outlet end spaced apart along the arrangement direction. The material guiding body is used to guide consumables from the inlet end to the outlet end. Multiple guides are connected to the material guiding body, and the multiple guides are spaced apart at the feeding end to guide multiple consumables into the material guiding body. The multiple guide members are inclined in different directions relative to the arrangement direction and are not parallel to each other.

2. The material guiding mechanism as described in claim 1, characterized in that: The material guiding body is provided with a material guiding channel that connects the inlet end and the outlet end along the material guiding direction. The material guiding channel is used to transport consumables and includes: A connecting channel for connecting the discharge end; Multiple sub-channels, each of which is used to connect to the feed end; The plurality of sub-channels are respectively connected to the combined channel, and a section of each sub-channel connected to the guide is configured to be close to each other along the material guiding direction.

3. The material guiding mechanism as described in claim 2, characterized in that: The sub-channel includes a first narrowing section, which is used to accommodate the guide; The first narrowing section includes a first segment and a second segment distributed along the material guiding direction, wherein the inner diameter of the first segment is larger than the inner diameter of the second segment.

4. The material guiding mechanism as described in claim 3, characterized in that: The sub-channel also includes a second narrowing section, which is connected to the first narrowing section; The second narrowing segment includes a third segment, which is connected to the second segment, and the inner diameter of the second segment is larger than the inner diameter of the third segment.

5. The material guiding mechanism as described in claim 4, characterized in that, The second narrowing section also includes a fourth segment, wherein the third segment and the fourth segment are connected along the material guiding direction, and the size of the fourth segment gradually decreases along the material guiding direction.

6. The material guiding mechanism as described in claim 2, characterized in that, The merging channel includes: An import segment is used to connect with the multiple sub-channels; The output section has one end connected to the input section and the other end connected to the output end; Wherein, the inner diameter of the inlet segment is greater than or equal to the inner diameter of the outlet segment.

7. The material guiding mechanism as described in claim 6, characterized in that, The size of the inlet section gradually decreases along the material guiding direction, and the end of the inlet section away from the outlet section is connected to the plurality of sub-channels.

8. The material guiding mechanism as described in claim 2, characterized in that, The guide includes: A connecting part is connected to the material guide body, and the connecting part is disposed in the sub-channel; The guide section is connected to the connecting section and has a through hole extending along the material guiding direction. The through hole is connected to the sub-channel.

9. The material guiding mechanism as described in claim 1, characterized in that, It also includes a material selection component, which includes: A guide component; it has a guide cavity, which corresponds to the discharge end, for receiving consumables; A driving component, connected to the guide component, is used to drive the guide component to move along the material selection direction; A material selection component is disposed on the side of the guide away from the guide along the arrangement direction. The material selection component includes a plurality of material selection channels spaced apart along the material selection direction. The guide cavity corresponds to one of the plurality of material selection channels.

10. The material guiding mechanism as described in claim 9, characterized in that, The inner diameter of the guide cavity on the side closer to the discharge end along the arrangement direction is larger than the inner diameter of the guide cavity on the side closer to the material selection component along the arrangement direction.

11. A nozzle kit, characterized in that, It includes a nozzle functional body and a material guiding mechanism as described in any one of claims 1 to 10, wherein the material guiding mechanism is connected to the nozzle functional body and is used to guide consumables into the nozzle functional body.

12. A 3D printing device, characterized in that, It includes a 3D printed body, and a material guiding mechanism as described in any one of claims 1 to 10 or a nozzle kit as described in claim 11.

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